The Philippine Declaration of Independence occurred on June 12, 1898 in Cavite II el Viejo (now Kawit), Cavite, Philippines. With the public reading of the Act of the Declaration of Independence, Filipino revolutionary forces under General Emilio Aguinaldo proclaimed the sovereignty and independence of the Philippine Islands from the colonial rule of Spain, which had been recently defeated at the Battle of Manila Bay during the Spanish-American War.

In the presence of a huge crowd, independence was proclaimed on June 12, 1898 between four and five in the afternoon in Cavite at the ancestral home of General Emilio Aguinaldo some 30 kilometers South of Manila . The event saw the unfurling of the National Flag of the Philippines, made in Hong Kong by Marcela Agoncillo, Lorenza Agoncillo, and Delfina Herboza, and the performance of the Marcha Filipina Magdalo, as the Nation's National Anthem, now known as Lupang Hinirang, which was composed by Julián Felipe and played by the San Francisco de Malabon marching band.

The Act of the Declaration of Independence was prepared, written, and read by Ambrosio Rianzares Bautista in Spanish. The Declaration was signed by ninety-eight people, among them an American army officer who witnessed the proclamation. The final paragraph states that there was a "stranger" (stranger in English translation — etranger in the original Spanish, possibly meaning foreigner) who attended the proceedings, Mr. L. M. Johnson, described as "a citizen of the U.S.A, a Coronel of Artillery".